Squeaking noise during operation.

1990 CHEVROLET CHEYENNE
380,022 MILES
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MCLEODR66
  • MEMBER
  • 3 POSTS
I have a squeaking sound during operation. It really gets bad when there is an overcast or it's raining. I have replaced all pullies and even gone down two sizes on the belt. It goes away for the moment but then it starts back agiain.
Apr 13, 2013 at 4:19 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
take the belt off and start the engine, if the noise is gone it's in that system someplace. either a n alternator bearing, water pump bearing etc. if it has a clutch fan cold be in there as well. Or the fan may behitting the fan shroud if squeak still thee then it's in the engine someplace.
Apr 13, 2013 at 4:35 AM
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